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How to Identify Missing BDA Kernel Files from the Grub Shell (Doc ID 2598819.1)

Last updated on JULY 20, 2021

Applies to:

Big Data Appliance Integrated Software - Version 4.14.0 and later
x86_64

Purpose

If the latest kernel files are missing from the boot directory, an Oracle Big Data Appliance (BDA) server reboot may seem hung. From the ILOM console, reboot may look to be stalled at the grub menu.  For example consider the case in, Upgrade to Mammoth 4.14 OL6 Reboot Fails-Servers Are Hung at the Grub Menu (Doc ID 2598813.1).

This document provides instructions on how to manually enter the commands in the grub shell during a reboot to identify missing kernel files.

In the images, examples and document that follow, user details, cluster names, hostnames, directory paths, filenames, etc. represent a fictitious sample (and are used to provide an illustrative example only). Any similarity to actual persons, or entities, living or dead, is purely coincidental and not intended in any manner. 

 

Details

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In this Document
Purpose
Details
 Background
 Using the Grub Shell to Identify Missing Kernel Files
 Enter the grub shell
 Commands to identify missing kernel files
 First Identify the OS Bootable Disks
 Second List All Files in "/boot"
 Third Check the List of Each Kernel File Type
 Instructions for X7-2/X8-2 Servers
 Instructions for X7-2/X8-2 Servers with OL7
 Instructions for X7-2/X8-2 Servers with OL6
 If missing files are found
References


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